@prefix isq: <https://w3id.org/standards/isq/ontologies/core/> .
@prefix smart: <https://example.org/smart-sdu/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<isq:t9-42>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "9-42" ;
  skosxl:prefLabel "ionic strength"@en ;
  skosxl:altLabel "I"@en ;
  skos:definition "in a sample, one half of the sum of square of the charge number stem:[z_i] (<<iso80000-10>>) of stem:[i]-th ion multiplied by its molality stem:[b_i] (<<t9-15>>) over any involved ion:\n\n[stem%unnumbered]\n++++\nI = 1/2 sum z_i^2 b_i\n++++\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-9> ;
  isq:hasUnit [
    skos:notation "mol*kg^(-1)" ;
    skosxl:prefLabel "mole per kilogram"@en
  ] ;
  iso:urn <urn:iso:std:iso:80000:-9:ed-2:en:item:9-42> .